“This guy says casual contact with peanut butter is not a problem.”
Funny, I must have just imagined my son’s emergency room visit after casual contact with peanuts.
Chopping and blending seems to change the situation.
BTW, the article goes on to describe how most peanut allergy folks "grow out of it" or actually develop sufficient resistance to peanuts (and peanut byproducts) to withstand casual events.